Galaxy S20 FE 5G vs Galaxy S21 Ultra 5G
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Galaxy S20 FE 5G
Starting at
£163.65£699.00 new
Galaxy S21 Ultra 5G
Starting at
£268.86£1,316.00 newWhat's the difference between the Galaxy S20 FE 5G and Galaxy S21 Ultra 5G?
Galaxy S20 FE 5G vs S21 Ultra 5G comes down to the chipset, RAM and battery. Refurbished, the Galaxy S20 FE 5G starts at £163.65, £105.21 less than the Galaxy S21 Ultra 5G. The Galaxy S21 Ultra 5G is the newer model, released in 2021.
Refurbished from
Chipset
RAM
Battery
Screen size
Screen type
- Chipset: Qualcomm SM8250 Snapdragon 865 5G (7 nm+) on the Galaxy S20 FE 5G, Exynos 2100 (5 nm), Qualcomm SM8350 Snapdragon 888 5G (5 nm) on the Galaxy S21 Ultra 5G.
- The Galaxy S21 Ultra 5G has more RAM: 12 GB vs 6 GB.
- The Galaxy S21 Ultra 5G has a bigger battery: 5000 mAh vs 4500 mAh.
Galaxy S20 FE 5G vs Galaxy S21 Ultra 5G specs
The Galaxy S20 FE 5G and Galaxy S21 Ultra 5G both offer solid Android experiences but suit different priorities. The Galaxy S20 FE 5G is designed for everyday use with a 6.5 inch Super AMOLED screen, 6 GB RAM, and a 4500 mAh battery. It supports microSDXC cards and dual physical SIMs, appealing to users who want expandable storage and traditional SIM options. The Galaxy S21 Ultra 5G offers a larger 6.8 inch Dynamic AMOLED 2X screen with higher resolution, more RAM at 12 GB, and a 5000 mAh battery. Its camera setup is more advanced, with a 108 megapixel main camera and higher resolution front camera. It suits users who want more power, a bigger, sharper display, and superior camera detail.
Galaxy S20 FE 5G vs Galaxy S21 Ultra 5G price
Colour
Galaxy S20 FE 5G vs Galaxy S21 Ultra 5G battery life and software updates
Durability covers battery capacity, software updates, and device design. These influence how long the phone lasts through the day and how current its software remains.
Battery Capacity
The Galaxy S20 FE 5G has a 4500 mAh battery, which supports daily use comfortably. The Galaxy S21 Ultra 5G offers a larger 5000 mAh battery, which can provide more screen time and longer usage between charges, especially for users who run demanding apps or spend more time streaming.
Battery
Foldable
Ip rating
Software updates
Wireless charging
Year of release
Galaxy S20 FE 5G vs Galaxy S21 Ultra 5G performance
Performance relates to processing power, memory, and storage. These affect how smoothly your phone runs apps, multitasks, and handles storage needs.
Processor Options
The Galaxy S20 FE 5G uses the Qualcomm SM8250 Snapdragon 865 5G chipset, while the Galaxy S21 Ultra 5G features either the Exynos 2100 or Qualcomm SM8350 Snapdragon 888 5G chipset. The S21 Ultra's processors use a smaller 5 nm process compared to the 7 nm+ in the S20 FE, which can support efficient performance for intensive tasks.
Memory
With 6 GB RAM, the Galaxy S20 FE 5G keeps everyday apps running smoothly. The Galaxy S21 Ultra 5G doubles that with 12 GB RAM, which is helpful if you keep many apps open or use demanding software.
Storage Options
The Galaxy S20 FE 5G comes in 128GB and 256GB storage sizes, suitable for most users. The Galaxy S21 Ultra 5G adds a 512GB option, ideal for those who require extra space for large files like videos and photos.
Chipset
RAM
Galaxy S20 FE 5G vs Galaxy S21 Ultra 5G screen
Screen quality affects how content looks and feels. Size, resolution, refresh rate, and screen type combine to shape your viewing experience.
Display Size and Type
The Galaxy S20 FE 5G has a 6.5 inch Super AMOLED screen, offering vibrant colours and good brightness. The Galaxy S21 Ultra 5G's 6.8 inch Dynamic AMOLED 2X screen is larger and uses newer display technology, making it suitable for users who want more room for videos and enhanced colour quality.
Resolution and Refresh Rate
Both phones support a 120 Hz refresh rate, providing smooth scrolling and animations. The Galaxy S21 Ultra 5G has a higher resolution of 1440 x 3200 pixels, delivering sharper and more detailed images compared to the Galaxy S20 FE 5G's 1080 x 2400 resolution.
Refresh rate
Resolution
Screen size
Screen type
Galaxy S20 FE 5G vs Galaxy S21 Ultra 5G camera
Audiovisual features focus on cameras and front-facing sensors, important for photography, video calls, and selfies.
Camera Setup
The Galaxy S20 FE 5G includes a triple camera setup, while the Galaxy S21 Ultra 5G has a quadruple camera system. This means the S21 Ultra offers additional camera features and more flexibility for different shooting scenarios.
Main Camera Resolution
The Galaxy S20 FE 5G's main camera is 12 megapixels, suitable for good quality photos. The Galaxy S21 Ultra 5G's main camera is 108 megapixels, capturing finer detail and larger images, which benefits users who prioritise high-resolution photography.
Front Camera Quality
For selfies and video calls, the Galaxy S20 FE 5G offers a 32 megapixel front camera. The Galaxy S21 Ultra 5G improves on this with a 40 megapixel front camera, providing sharper and more detailed self-portraits.
Camera type
Front camera
Main camera
Galaxy S20 FE 5G vs Galaxy S21 Ultra 5G size and design
Other differences include physical dimensions, SIM and storage options, and device weight, which affect handling and how you use your phone day to day.
Storage Expansion and SIM Options
The Galaxy S20 FE 5G supports microSDXC cards, allowing you to add extra storage as needed. It also has dual physical SIM slots, which suits users who want to manage two physical numbers. The Galaxy S21 Ultra 5G does not support microSDXC cards but offers a physical SIM plus eSIM setup, which provides flexibility for some users.
Physical Size and Weight
The Galaxy S20 FE 5G measures 159.8 mm in height, 74.5 mm in width, and is 8.4 mm deep, weighing 190 g. The Galaxy S21 Ultra 5G is slightly larger at 165.1 mm high, 75.6 mm wide, and 8.9 mm deep, with a weight of 227 g. The S21 Ultra suits those comfortable with a larger, heavier phone, while the S20 FE is more compact and lighter.
Carrier compatibility
Connector
Depth
Height
Mobile network
Release date
SD card slot
SIM card
Weight
Width
Galaxy S20 FE 5G or Galaxy S21 Ultra 5G: which should you buy?
Buy the Galaxy S20 FE 5G if
- you want to spend less: it starts at £163.65, £105.21 less than the Galaxy S21 Ultra 5G
- you want a lighter build (190 g vs 227 g)
- you want a memory card slot
Buy the Galaxy S21 Ultra 5G if
- you want more RAM (12 GB vs 6 GB)
- you want a bigger battery (5000 mAh vs 4500 mAh)
- you want a bigger screen (6.8 inch vs 6.5 inch)
What our customers say
Customers of the Galaxy S20 FE 5G appreciate its excellent condition and good value. Many say the phone feels almost new, with smooth app performance and a battery that lasts all day. The screen quality is bright and clear, and the phone handles common tasks well. Users mention the benefit of the SD card slot for extra storage, and the device's solid feel. Overall, customers find the phone easy to use and recommend it for those seeking a reliable, everyday smartphone.
Reviews for the Galaxy S21 Ultra 5G highlight its near-new appearance and strong performance. Customers praise its speed, reliability, and detailed camera setup. The larger screen and higher resolution receive positive comments, as does the phone's suitability for those wanting advanced features. Some users have noted very minor cosmetic marks, but this does not affect functionality. The S21 Ultra is well suited to buyers prioritising power, camera quality, and a premium screen.
Both phones attract users looking for high-quality refurbished devices. The Galaxy S20 FE 5G suits those after a lighter phone with expandable storage and solid everyday use. The Galaxy S21 Ultra 5G is favoured by those wanting more memory, a larger, sharper display, and enhanced cameras.
Galaxy S20 FE 5G vs Galaxy S21 Ultra 5G FAQs
Galaxy S20 FE 5G vs S21 Ultra 5G comes down to the chipset, RAM and battery. Chipset: Qualcomm SM8250 Snapdragon 865 5G (7 nm+) on the Galaxy S20 FE 5G, Exynos 2100 (5 nm), Qualcomm SM8350 Snapdragon 888 5G (5 nm) on the Galaxy S21 Ultra 5G. The Galaxy S21 Ultra 5G has more RAM: 12 GB vs 6 GB.
The Galaxy S20 FE 5G is cheaper refurbished, from £163.65 compared with £268.86 for the Galaxy S21 Ultra 5G.
The Galaxy S21 Ultra 5G has a bigger battery: 5000 mAh vs 4500 mAh.
The Galaxy S21 Ultra 5G has a higher-resolution main camera: 108 megapixels vs 12 megapixels.
Updates for the Galaxy S20 FE 5G ended in Nov 2025. Updates for the Galaxy S21 Ultra 5G ended in Feb 2026.
The Galaxy S21 Ultra 5G adds more RAM (12 GB vs 6 GB), a bigger battery (5000 mAh vs 4500 mAh) and a bigger screen (6.8 inch vs 6.5 inch). Refurbished, it costs £105.21 more (from £268.86 vs £163.65).
Refurbished, the Galaxy S20 FE 5G comes in 128GB and 256GB, and the Galaxy S21 Ultra 5G in 128GB, 256GB and 512GB.
